No Luigi Love??
I'm playing Mansion 2 at the moment and it's bloody lovely! 20 minute levels, lots of variety, funny animation and great attention to detail. One of those games where if you lookup how to do something on the interwebs you're then kicking yourself for not spotting something that seems so obvious now! The 3DS seems to work so much better when your peering into a miniature world rather than when it tries to do expansive vistas.
I take issue with the comment that it's using the gyroscopic controls for looking around though (it only does this when you peer through windows, not for any large portion of the game, thankfully!). It looks to me like it's using the cameras on the lid to decide where you're looking, I reckon it's just too fast and precise to be the gyro. Does anyone know for sure?